Nine Species of Graphidaceae (Ostropales, Ascomycota) Collected in Siem Reap, Cambodia

Abstract

Nine species of seven genera in the family Graphidaceae are recognized as Cambodian member of the lichens and their distribution ranges are presented. Among them, one species, Graphis cambodiensis M. Nakan., Kashiw. & K. H. Moon, is new to science. It is distinct from allied species of the genus in having prominent lirellae covered by thallus nearly up to the exciples, muriform spores 75–105 × 20–30 μm in size and in producing norstictic acid. Graphis commaculans Vain. is reduced to a synonym of Sarcographa gyrizans (Leight.) Mu?ｽNll. Arg. The following seven species, Carbacanthographis induta (Mu?ｽNll. Arg.) Lu?ｽNcking, Fissurina dumastii Fée, Graphis glaucescens Fée, G. supracola A. W. Archer, Gymnographa heterospora (Nyl.) Staiger, Hemithecium aphanes (Mont. & v. d. Bosch) M. Nakan. & Kashiw. and Sarcographa gyrizans (Leight.) Mu?ｽNll. Arg. are new to the lichen flora of Cambodia.